Home / 6,619.18-9,931.34-2,918.80

Finding the Fourth Proportional to 6,619.18, 9,931.34 and 2,918.80

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Solution

The fourth proportional to 6,619.18, 9,931.34 and 2,918.80 is: 4,379.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,619.18 : 9,931.34 = 2,918.80 : x
  2. Step 2: Convert to fraction form
    6,619.18/9,931.34 = 2,918.80/x
  3. Step 3: Cross multiply
    6,619.18x = 9,931.34 × 2,918.80
  4. Step 4: Simplify right side
    6,619.18x = 28,987,577.66
  5. Step 5: Solve for x
    x = 28,987,577.66/6,619.18
  6. Step 6: Final answer
    x = 4,379.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.